CONFIRMED EXOPLANET
·
Sub-Neptune
HD 191939 d
Orbits Host Star: HD 191939
(Type G9 V)
· Distance: 174.800 Light-Years (53.609 pc)
Planetary Radius
2.995 R⊕
Planetary Mass
2.800 M⊕
Surface Gravity
0.31 g / g⊕
Equilibrium Temp
540K (+267°C / +513°F)
Orbital Period
38.353 days
Discovery Year
2020 (Transit)
Habitability Assessment
⚠️ Thermal Exclusions: High equilibrium temperature (540 K · +267°C / +513°F) places this world well interior to the runaway greenhouse threshold.
Discovery Facility: Transiting Exoplanet Survey Satellite (TESS).
Other Worlds in the HD 191939 System (5)
NASA EXOPLANET ARCHIVE COMPOSITE PARAMETERS